July weather forecast
Mandeville, Jamaica

July can be regarded as one of Mandeville's warmer months, with temperatures reaching up to 30°C (86°F). It holds a fine balance between warm temperature and manageable humidity at 81%. The town receives the maximum number of sunshine hours in the year during this month with 10.4 hours. Expect similar weather dynamics in August, with minor modifications.

Temperature

The onset of July in Mandeville brings an average high-temperature of a still moderately hot 29.9°C (85.8°F), nearly matching the June temperature. Throughout the nights in July, Mandeville experiences an average low-temperature of 21.8°C (71.2°F).

Heat index

July's average heat index is calculated to be a fiery hot 38°C (100.4°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

The months with the lowest humidity are March and July, with an average relative humidity of 81%.

Rainfall

In Mandeville, during July, the rain falls for 23.4 days and regularly aggregates up to 117mm (4.61") of precipitation. In Mandeville, during the entire year, the rain falls for 297.9 days and collects up to 1472mm (57.95") of precipitation.

Daylight

In Mandeville, the average length of the day in July is 13h and 5min.
On the first day of July, sunrise is at 05:38 and sunset at 18:49. On the last day of the month, sunrise is at 05:48 and sunset at 18:44 EST.

Sunshine

July and August, with an average of 10.4h of sunshine, are months with the most sunshine in Mandeville.

UV index

The months with the highest UV index are June and July, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index of 7 during July leads to these instructions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.